package com.info.zhiduoduo.common.utils;

import org.apache.commons.lang3.StringUtils;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;

import javax.servlet.http.HttpServletRequest;

public class IPUtil {

	/**
	 * 获取访问用户的客户端IP（适用于公网与局域网）.
	 */
	public static String getIpAddr(final HttpServletRequest request) {

		String ipString = request.getHeader("x-forwarded-for");
		if (StringUtils.isBlank(ipString) || "unknown".equalsIgnoreCase(ipString)) {
			ipString = request.getHeader("Proxy-Client-IP");
		}
		if (StringUtils.isBlank(ipString) || "unknown".equalsIgnoreCase(ipString)) {
			ipString = request.getHeader("WL-Proxy-Client-IP");
		}
		if (StringUtils.isBlank(ipString) || "unknown".equalsIgnoreCase(ipString)) {
			ipString = request.getRemoteAddr();
		}

		// 多个路由时，取第一个非unknown的ip
		final String[] arr = ipString.split(",");
		for (final String str : arr) {
			if (!"unknown".equalsIgnoreCase(str)) {
				ipString = str;
				break;
			}
		}

		return ipString;
	}

	public static String getAddresses(String content, String encodingString) throws UnsupportedEncodingException {

		// 这里调用pconline的接口
		String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
		// 从http://whois.pconline.com.cn取得IP所在的省市区信息
		String returnStr = getResult(urlStr, content, encodingString);
		if (returnStr != null) {
			// 处理返回的省市区信息
			System.out.println(returnStr);
			String[] temp = returnStr.split(",");
			if (temp.length < 3) {
				return "0";//无效IP，局域网测试
			}
			//            String region = (temp[5].split(":"))[1].replaceAll("\"", "");
			//            region = decodeUnicode(region);// 省份

			String country = "";
			String area = "";
			String region = "";
			String city = "";
			String county = "";
			String isp = "";
			for (int i = 0; i < temp.length; i++) {
				switch (i) {
					case 1:
						country = (temp[i].split(":"))[2].replaceAll("\"", "");
						country = decodeUnicode(country);//国家
						break;
					//                  case 3:
					//                      area = (temp[i].split(":"))[1].replaceAll("\"", "");
					//                      area =decodeUnicode(area);//地区
					//                   break;
					case 5:
						region = (temp[i].split(":"))[1].replaceAll("\"", "");
						region = decodeUnicode(region);//省份
						break;
					case 7:
						city = (temp[i].split(":"))[1].replaceAll("\"", "");
						city = decodeUnicode(city);//市区
						break;
					case 9:
						county = (temp[i].split(":"))[1].replaceAll("\"", "");
						county = decodeUnicode(county);//地区
						break;
					case 11:
						isp = (temp[i].split(":"))[1].replaceAll("\"", "");
						isp = decodeUnicode(isp);//ISP公司
						break;
				}
			}

			System.out.println(country + area + "=" + region + "=" + city + "=" + county + "=" + isp);
			StringBuffer sb = new StringBuffer(country).append(region).append(city).append(county).append(" ").append(isp);
			return sb.toString();
		}
		return null;
	}

	/**
	 * @param urlStr   请求的地址
	 * @param content  请求的参数 格式为：name=xxx&pwd=xxx
	 * @param encoding 服务器端请求编码。如GBK,UTF-8等
	 * @return
	 */
	private static String getResult(String urlStr, String content, String encoding) {
		URL url = null;
		HttpURLConnection connection = null;
		try {
			url = new URL(urlStr);
			connection = (HttpURLConnection) url.openConnection();// 新建连接实例
			connection.setConnectTimeout(3000);// 设置连接超时时间，单位毫秒
			connection.setReadTimeout(3000);// 设置读取数据超时时间，单位毫秒
			connection.setDoOutput(true);// 是否打开输出流 true|false
			connection.setDoInput(true);// 是否打开输入流true|false
			connection.setRequestMethod("POST");// 提交方法POST|GET
			connection.setUseCaches(false);// 是否缓存true|false
			connection.connect();// 打开连接端口
			DataOutputStream out = new DataOutputStream(connection.getOutputStream());// 打开输出流往对端服务器写数据
			out.writeBytes(content);// 写数据,也就是提交你的表单 name=xxx&pwd=xxx
			out.flush();// 刷新
			out.close();// 关闭输出流
			BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), encoding));// 往对端写完数据对端服务器返回数据
			// ,以BufferedReader流来读取
			StringBuffer buffer = new StringBuffer();
			String line = "";
			while ((line = reader.readLine()) != null) {
				buffer.append(line);
			}
			reader.close();
			return buffer.toString();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (connection != null) {
				connection.disconnect();// 关闭连接
			}
		}
		return null;
	}

	/**
	 * unicode 转换成 中文
	 *
	 * @param theString
	 * @return
	 * @author fanhui 2007-3-15
	 */
	public static String decodeUnicode(String theString) {
		char aChar;
		int len = theString.length();
		StringBuffer outBuffer = new StringBuffer(len);
		for (int x = 0; x < len; ) {
			aChar = theString.charAt(x++);
			if (aChar == '\\') {
				aChar = theString.charAt(x++);
				if (aChar == 'u') {
					int value = 0;
					for (int i = 0; i < 4; i++) {
						aChar = theString.charAt(x++);
						switch (aChar) {
							case '0':
							case '1':
							case '2':
							case '3':
							case '4':
							case '5':
							case '6':
							case '7':
							case '8':
							case '9':
								value = (value << 4) + aChar - '0';
								break;
							case 'a':
							case 'b':
							case 'c':
							case 'd':
							case 'e':
							case 'f':
								value = (value << 4) + 10 + aChar - 'a';
								break;
							case 'A':
							case 'B':
							case 'C':
							case 'D':
							case 'E':
							case 'F':
								value = (value << 4) + 10 + aChar - 'A';
								break;
							default:
								throw new IllegalArgumentException("Malformed      encoding.");
						}
					}
					outBuffer.append((char) value);
				} else {
					if (aChar == 't') {
						aChar = '\t';
					} else if (aChar == 'r') {
						aChar = '\r';
					} else if (aChar == 'n') {
						aChar = '\n';
					} else if (aChar == 'f') {
						aChar = '\f';
					}
					outBuffer.append(aChar);
				}
			} else {
				outBuffer.append(aChar);
			}
		}
		return outBuffer.toString();
	}
	//    // 测试
	//    public static void main(String[] args) {
	//        AddressUtils addressUtils = new AddressUtils();
	//        // 测试ip 111.121.72.101 中国贵州省贵阳市 电信
	//        String ip = "111.121.72.101";
	//        String address = "";
	//        try {
	//            address = addressUtils.getAddresses("ip="+ip, "utf-8");
	//        } catch (UnsupportedEncodingException e) {
	//            // TODO Auto-generated catch block
	//            e.printStackTrace();
	//        } catch (Exception e) {
	//            e.printStackTrace();
	//        }
	//        System.out.println(address);
	//        // 输出结果为：中国贵州省贵阳市 电信

}
